STS-31 launch

1990.
The Space Shuttle Columbia on Pad 39A during the picture-perfect ascent
of sister ship Discovery after lift off of STS-31. This was the first
time since January 1986 that there was a Shuttle on each pad, which are
separated by 1.6 miles. Discovery, carrying a five-member crew and the
Hubble Space Telescope, lifted off at 8:34 a.m. EDT, April 24.